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REFACTOR: Final cleanup of DiscImageChef.DiscImages.

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This commit is contained in:
Natalia Portillo
2017-12-24 00:12:31 +00:00
parent 536888507f
commit 736552f6d8
52 changed files with 5203 additions and 5359 deletions
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162
DiscImageChef.DiscImages/CopyQM.cs
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@@ -42,76 +42,6 @@ namespace DiscImageChef.DiscImages
{
public class CopyQm : ImagePlugin
{
#region Internal Structures
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct CopyQmHeader
{
/// <summary>0x00 magic, "CQ"</summary>
public ushort magic;
/// <summary>0x02 always 0x14</summary>
public byte mark;
/// <summary>0x03 Bytes per sector (part of FAT's BPB)</summary>
public ushort sectorSize;
/// <summary>0x05 Sectors per cluster (part of FAT's BPB)</summary>
public byte sectorPerCluster;
/// <summary>0x06 Reserved sectors (part of FAT's BPB)</summary>
public ushort reservedSectors;
/// <summary>0x08 Number of FAT copies (part of FAT's BPB)</summary>
public byte fatCopy;
/// <summary>0x09 Maximum number of entries in root directory (part of FAT's BPB)</summary>
public ushort rootEntries;
/// <summary>0x0B Sectors on disk (part of FAT's BPB)</summary>
public ushort sectors;
/// <summary>0x0D Media descriptor (part of FAT's BPB)</summary>
public byte mediaType;
/// <summary>0x0E Sectors per FAT (part of FAT's BPB)</summary>
public ushort sectorsPerFat;
/// <summary>0x10 Sectors per track (part of FAT's BPB)</summary>
public ushort sectorsPerTrack;
/// <summary>0x12 Heads (part of FAT's BPB)</summary>
public ushort heads;
/// <summary>0x14 Hidden sectors (part of FAT's BPB)</summary>
public uint hidden;
/// <summary>0x18 Sectors on disk (part of FAT's BPB)</summary>
public uint sectorsBig;
/// <summary>0x1C Description</summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 60)] public string description;
/// <summary>0x58 Blind mode. 0 = DOS, 1 = blind, 2 = HFS</summary>
public byte blind;
/// <summary>0x59 Density. 0 = Double, 1 = High, 2 = Quad/Extra</summary>
public byte density;
/// <summary>0x5A Cylinders in image</summary>
public byte imageCylinders;
/// <summary>0x5B Cylinders on disk</summary>
public byte totalCylinders;
/// <summary>0x5C CRC32 of data</summary>
public uint crc;
/// <summary>0x60 DOS volume label</summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 11)] public string volumeLabel;
/// <summary>0x6B Modification time</summary>
public ushort time;
/// <summary>0x6D Modification date</summary>
public ushort date;
/// <summary>0x6F Comment length</summary>
public ushort commentLength;
/// <summary>0x71 Sector base (first sector - 1)</summary>
public byte secbs;
/// <summary>0x72 Unknown</summary>
public ushort unknown;
/// <summary>0x74 Interleave</summary>
public byte interleave;
/// <summary>0x75 Skew</summary>
public byte skew;
/// <summary>0x76 Source drive type. 1 = 5.25" DD, 2 = 5.25" HD, 3 = 3.5" DD, 4 = 3.5" HD, 6 = 3.5" ED</summary>
public byte drive;
/// <summary>0x77 Filling bytes</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 13)] public byte[] fill;
/// <summary>0x84 Header checksum</summary>
public byte headerChecksum;
}
#endregion Internal Structures
#region Internal Constants
const ushort COPYQM_MAGIC = 0x5143;
const byte COPYQM_MARK = 0x14;
@@ -157,16 +87,13 @@ namespace DiscImageChef.DiscImages
0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
};
#endregion Internal Constants
#region Internal variables
CopyQmHeader header;
uint calculatedDataCrc;
byte[] decodedDisk;
MemoryStream decodedImage;
CopyQmHeader header;
bool headerChecksumOk;
uint calculatedDataCrc;
#endregion Internal variables
public CopyQm()
{
@@ -197,7 +124,6 @@ namespace DiscImageChef.DiscImages
};
}
#region Public methods
public override bool IdentifyImage(Filter imageFilter)
{
Stream stream = imageFilter.GetDataForkStream();
@@ -209,9 +135,7 @@ namespace DiscImageChef.DiscImages
ushort magic = BitConverter.ToUInt16(hdr, 0);
if(magic != COPYQM_MAGIC || hdr[0x02] != COPYQM_MARK || 133 + hdr[0x6F] >= stream.Length) return false;
return true;
return magic == COPYQM_MAGIC && hdr[0x02] == COPYQM_MARK && 133 + hdr[0x6F] < stream.Length;
}
public override bool OpenImage(Filter imageFilter)
@@ -291,8 +215,8 @@ namespace DiscImageChef.DiscImages
stream.Read(nonRepeated, 0, runLength);
decodedImage.Write(nonRepeated, 0, runLength);
foreach(byte c in nonRepeated) calculatedDataCrc = copyQmCrcTable[(c ^ calculatedDataCrc) & 0x3F] ^
(calculatedDataCrc >> 8);
foreach(byte c in nonRepeated)
calculatedDataCrc = copyQmCrcTable[(c ^ calculatedDataCrc) & 0x3F] ^ (calculatedDataCrc >> 8);
}
}
@@ -319,8 +243,8 @@ namespace DiscImageChef.DiscImages
headerChecksumOk = ((-1 * sum) & 0xFF) == header.headerChecksum;
DicConsole.DebugWriteLine("CopyQM plugin", "Calculated header checksum = 0x{0:X2}, {1}",
(-1 * sum) & 0xFF, headerChecksumOk);
DicConsole.DebugWriteLine("CopyQM plugin", "Calculated header checksum = 0x{0:X2}, {1}", (-1 * sum) & 0xFF,
headerChecksumOk);
DicConsole.DebugWriteLine("CopyQM plugin", "Calculated data CRC = 0x{0:X8}, {1}", calculatedDataCrc,
calculatedDataCrc == header.crc);
@@ -599,9 +523,7 @@ namespace DiscImageChef.DiscImages
{
return ImageInfo.DriveSerialNumber;
}
#endregion Public methods
#region Unsupported features
public override byte[] ReadSectorTag(ulong sectorAddress, SectorTagType tag)
{
throw new FeatureUnsupportedImageException("Feature not supported by image format");
@@ -681,6 +603,72 @@ namespace DiscImageChef.DiscImages
{
throw new FeatureUnsupportedImageException("Feature not supported by image format");
}
#endregion Unsupported features
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct CopyQmHeader
{
/// <summary>0x00 magic, "CQ"</summary>
public ushort magic;
/// <summary>0x02 always 0x14</summary>
public byte mark;
/// <summary>0x03 Bytes per sector (part of FAT's BPB)</summary>
public ushort sectorSize;
/// <summary>0x05 Sectors per cluster (part of FAT's BPB)</summary>
public byte sectorPerCluster;
/// <summary>0x06 Reserved sectors (part of FAT's BPB)</summary>
public ushort reservedSectors;
/// <summary>0x08 Number of FAT copies (part of FAT's BPB)</summary>
public byte fatCopy;
/// <summary>0x09 Maximum number of entries in root directory (part of FAT's BPB)</summary>
public ushort rootEntries;
/// <summary>0x0B Sectors on disk (part of FAT's BPB)</summary>
public ushort sectors;
/// <summary>0x0D Media descriptor (part of FAT's BPB)</summary>
public byte mediaType;
/// <summary>0x0E Sectors per FAT (part of FAT's BPB)</summary>
public ushort sectorsPerFat;
/// <summary>0x10 Sectors per track (part of FAT's BPB)</summary>
public ushort sectorsPerTrack;
/// <summary>0x12 Heads (part of FAT's BPB)</summary>
public ushort heads;
/// <summary>0x14 Hidden sectors (part of FAT's BPB)</summary>
public uint hidden;
/// <summary>0x18 Sectors on disk (part of FAT's BPB)</summary>
public uint sectorsBig;
/// <summary>0x1C Description</summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 60)] public string description;
/// <summary>0x58 Blind mode. 0 = DOS, 1 = blind, 2 = HFS</summary>
public byte blind;
/// <summary>0x59 Density. 0 = Double, 1 = High, 2 = Quad/Extra</summary>
public byte density;
/// <summary>0x5A Cylinders in image</summary>
public byte imageCylinders;
/// <summary>0x5B Cylinders on disk</summary>
public byte totalCylinders;
/// <summary>0x5C CRC32 of data</summary>
public uint crc;
/// <summary>0x60 DOS volume label</summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 11)] public string volumeLabel;
/// <summary>0x6B Modification time</summary>
public ushort time;
/// <summary>0x6D Modification date</summary>
public ushort date;
/// <summary>0x6F Comment length</summary>
public ushort commentLength;
/// <summary>0x71 Sector base (first sector - 1)</summary>
public byte secbs;
/// <summary>0x72 Unknown</summary>
public ushort unknown;
/// <summary>0x74 Interleave</summary>
public byte interleave;
/// <summary>0x75 Skew</summary>
public byte skew;
/// <summary>0x76 Source drive type. 1 = 5.25" DD, 2 = 5.25" HD, 3 = 3.5" DD, 4 = 3.5" HD, 6 = 3.5" ED</summary>
public byte drive;
/// <summary>0x77 Filling bytes</summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 13)] public byte[] fill;
/// <summary>0x84 Header checksum</summary>
public byte headerChecksum;
}
}
}